HISTORY OF THE fASTRAPOTHERIA 515 



dylarthra were spread over all the continents, except Australia, 

 and that from them the other ungulate orders arose in dif- 

 ferent regions. At all events, the fCondylarthra show how 

 the transition from clawed to hoofed types may have occurred 

 and perhaps actually did so, but it would be premature to 

 affirm this. 



